This isn't just a replacement CNC hop up for A&K PKM, A&K M60 and LCT M60. Made out of full metal so it will last longer and give you the edge in accuracy. It is possible for you to use standard hop up rubbers with this so it isn't proprietary...

The Gen-2 KAA (Knight's Armament Airsoft) LMG uses a slightly modified M249 hop-up chamber to achieve maximum feeding speed, but unfortunately standard M249 hop-up chamber doesn't work with the KAA LMG... and users are left with not much choice in the...

This is an OEM replacement hop up bucking for the Echo1 M28 Sniper Rifle.How to install: Apply some silicone oil inside and outside the bucking when installing onto the barrel and into hop up chamber. Tech Note: Hop-Up Buckings are wear items and should...